The gray whale is kind of ancient animal that appeared at the beginning of the Oligocene, over 30 million years ago. There used to be a large amount of gray whale in the world but because the oil and waste pollution and randomly hunted by the human, the number of them has reduced to around 100. What on earth we did for this planet? We couldn't lost attention of the animal who lives far from our lives. And we couldn't destroy their living environment by our casual behaviors. If we can remove these pollution from the sea, what can you see again?